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Process overview

The SMD utilizes the rotational energy of the impeller arms to impart a high-energy motion to the media/ slurry mixture inside the mill. This results in particle-to-particle shear and compressive forces which produce the desired grinding mechanism for fine grinding.

The vertical arrangement allows the drive train to be entirely supported by the mill body which leads to a small foot print and simple foundation. Also, the vertical arrangement does not require any slurry seals or inlet feed pressure. The SMD is a fluidized media mill which means, the impeller speed is high enough to distribute the media throughout the slurry regardless of media density, forcing particle and media contact.

Largest SMD in the world...

The largest SMD in the world, a 1.1 MW device, has recently been commissioned in South Africa in a platinum regrind application. The advent of larger SMDs allows efficient processing of finely disseminated ore bodies and other challenging applications.